:root {
  color-scheme: light dark;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-muted: #eef5f4;
  --text: #172126;
  --muted: #5d6c72;
  --border: #d8e1e4;
  --accent: #0f766e;
  --accent-strong: #0a5c55;
  --focus: #b45309;
  --max-width: 1060px;
  --content-width: 820px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111719;
    --surface: #171f22;
    --surface-muted: #132826;
    --text: #edf4f5;
    --muted: #afbdc1;
    --border: #314044;
    --accent: #5eead4;
    --accent-strong: #99f6e4;
    --focus: #fbbf24;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.95em;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 10;
  transform: translateY(-160%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.55rem 0.75rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.narrow {
  max-width: var(--content-width);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.header-grid {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto auto;
  align-items: center;
  gap: 1rem;
  min-height: 74px;
}

.site-brand {
  color: var(--text);
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
  text-decoration: none;
}

.brand-name {
  font-weight: 700;
  overflow-wrap: anywhere;
}

.brand-role {
  color: var(--muted);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.desktop-nav,
.language-switcher {
  align-items: center;
  display: flex;
  gap: 0.35rem;
}

.desktop-nav a,
.language-switcher a,
.mobile-nav summary {
  border-radius: 6px;
  color: var(--text);
  display: inline-flex;
  font-size: 0.95rem;
  padding: 0.45rem 0.6rem;
  text-decoration: none;
}

.desktop-nav a:hover,
.language-switcher a:hover,
.mobile-nav summary:hover {
  background: var(--surface-muted);
}

.language-switcher {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.15rem;
}

.language-switcher [aria-current="page"] {
  background: var(--accent);
  color: #ffffff;
}

.mobile-nav {
  display: none;
}

.mobile-nav summary {
  cursor: pointer;
  list-style: none;
}

.mobile-nav summary::-webkit-details-marker {
  display: none;
}

.mobile-nav nav {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgb(15 23 42 / 0.08);
  display: grid;
  gap: 0.15rem;
  min-width: 12rem;
  padding: 0.45rem;
  position: absolute;
  right: 1rem;
  top: 4.5rem;
}

.mobile-nav a {
  border-radius: 6px;
  color: var(--text);
  padding: 0.55rem 0.65rem;
  text-decoration: none;
}

.mobile-nav a:hover {
  background: var(--surface-muted);
}

.section {
  padding-block: 4.5rem;
}

.section + .section {
  border-top: 1px solid var(--border);
}

.muted {
  background: var(--surface-muted);
}

.hero {
  background: var(--surface);
}

.hero-grid {
  align-items: center;
  display: grid;
  gap: 3rem;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
  min-height: 560px;
}

.eyebrow,
.section-kicker {
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.6rem, 4vw, 4.6rem);
  line-height: 1.05;
  margin-bottom: 1rem;
  overflow-wrap: anywhere;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.18;
  margin-bottom: 1.2rem;
}

h3 {
  font-size: 1.08rem;
  line-height: 1.35;
  margin-bottom: 0.65rem;
}

.subtitle {
  color: var(--muted);
  font-size: 1.18rem;
  margin-bottom: 1.2rem;
}

.intro {
  font-size: 1.08rem;
  max-width: 65ch;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.button {
  align-items: center;
  background: var(--accent-strong);
  border: 1px solid var(--accent-strong);
  border-radius: 7px;
  color: #ffffff;
  display: inline-flex;
  font: inherit;
  font-weight: 700;
  min-height: 2.75rem;
  padding: 0.6rem 0.95rem;
}

.button:disabled {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
  cursor: not-allowed;
}

.profile-link {
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--muted);
  display: inline-flex;
  max-width: 100%;
  padding: 0.45rem 0.65rem;
  overflow-wrap: anywhere;
}

.note {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 0.8rem;
}

.portrait-placeholder {
  aspect-ratio: 1;
  align-items: center;
  background:
    radial-gradient(circle at 50% 32%, color-mix(in srgb, var(--accent) 20%, transparent) 0 17%, transparent 18%),
    linear-gradient(180deg, var(--surface-muted), var(--surface));
  border: 1px solid var(--border);
  border-radius: 16px;
  display: grid;
  justify-items: center;
  padding: 2rem;
  text-align: center;
}

.portrait-placeholder span {
  color: var(--muted);
  font-weight: 700;
  max-width: 12rem;
  overflow-wrap: anywhere;
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.publication-list li,
.cv-grid section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem;
}

.card p,
.publication-list p,
.cv-grid p {
  color: var(--muted);
  margin-bottom: 0;
}

.publication-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding-left: 1.3rem;
}

.publication-list li {
  padding-left: 0.3rem;
}

.publication-list strong {
  color: var(--text);
}

.cv-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cv-download {
  margin-top: 1.3rem;
}

.contact-list {
  display: grid;
  gap: 0.8rem;
  margin: 0;
}

.contact-list div {
  border-bottom: 1px solid var(--border);
  display: grid;
  gap: 0.5rem;
  grid-template-columns: minmax(9rem, 0.35fr) minmax(0, 1fr);
  padding-bottom: 0.8rem;
}

.contact-list dt {
  color: var(--muted);
  font-weight: 700;
}

.contact-list dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding-block: 2rem;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
}

.footer-grid p {
  margin: 0;
}

@media (max-width: 900px) {
  .header-grid {
    grid-template-columns: minmax(0, 1fr) auto auto;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-nav {
    display: block;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .portrait-placeholder {
    max-width: 260px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 1.25rem, var(--max-width));
  }

  .header-grid {
    gap: 0.5rem;
    grid-template-columns: 1fr auto;
    padding-block: 0.6rem;
  }

  .site-brand {
    grid-column: 1;
  }

  .language-switcher {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .mobile-nav {
    grid-column: 2;
    grid-row: 1;
  }

  .mobile-nav nav {
    left: 0.75rem;
    right: 0.75rem;
    top: 6.9rem;
  }

  .section {
    padding-block: 3rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button,
  .profile-link {
    justify-content: center;
    width: 100%;
  }

  .cv-grid,
  .contact-list div {
    grid-template-columns: 1fr;
  }
}